30508 ti im 20051226-s00003 no.a1036-1/8 LA42351 overview LA42351 is 5w 1-channel af power amplifier with dc volume control intended for televisions. features ? p o1 5w 1ch (v cc = 18v, r l = 8 , thd = 10%) ? p o2 3w 1ch (v cc = 14v, r l = 8 , thd = 10%) ? built-in dc volume control. ? built-in standby function. ? built-in overheat protection. la42000 series is power ic which made pin compatible possible altogether in 3 to 15w. they consist of four kinds of power ics. (mono, stereo, mono with volume function, st ereo with volume function.). they realized pcb layout communalization of an audio power block of tv. since some external parts are different, however, the pattern design must enable sharing of the substrate. channel p o mono stereo volume la42051 5w { la42052 5w { LA42351 5w { { la42352 5w { { la42071 7w { la42072 7w { la42152 15w { ordering number : ena1036 monolithic linear ic 5w 1-channel af power amplifier with dc volume control specifications of any and all sanyo semiconductor co.,l td. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer ' s products or equipment. to verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer ' sproductsor equipment. any and all sanyo semiconductor co.,ltd. products described or contained herein are, with regard to "standard application", intended for the use as general el ectronics equipment (home appliances, av equipment, communication device, office equipment, industrial equ ipment etc.). the products mentioned herein shall not be intended for use for any "special application" (medica l equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, t ransportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of re liability and can directly threaten human lives in case of failure or malfunction of the product or may cause har m to human bodies, nor shall they grant any guarantee thereof. if you should intend to use our products for app lications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. if there is n o consultation or inquiry before the intended use, our customer shall be solely responsible for the use.
LA42351 no.a1036-2/8 specifications absolute maximum ratings at ta = 25 c parameter symbol conditions ratings unit maximum supply voltage v cc max no signal 24 v allowable power dissipation pd max infinite heat sink 15 w maximum junction temperature tj max 150 c thermal resistance jc 3 c/w operating temperature topr -25 to +75 c storage temperature tstg -40 to +150 c operating conditions at ta = 25 c parameter symbol conditions ratings unit recommended supply voltage v cc 18 v recommended load resistance r l 8 allowable operating voltage range v cc op 10 to 22 v operating characteristics at ta = 25 c, v cc = 18v, r l = 8 , v cont = 5v, f = 1khz, rg = 600 ratings parameter symbol conditions min typ max unit standby current i stb amplifier off 0 10 a quiescent current i cco rg = 0 , volume = 0v 15 35 70 ma output power p o thd = 10% 4 5 w total harmonic distortion thd p o = 1w 0.2 0.8 % voltage gain vg v o = 0dbm 32.5 34.5 36.5 db output noise voltage v no rg = 0 , v cont = 0v, f = 20hz to 20khz 0.13 0.4 mvrms volume attenuation att v in = 100mv, v cont = 0v, with 1k-bpf 70 80 db v stb -h amplifier on 2.5 10 v standby control voltage (the pin 5 voltage) v stb -l amplifier off 0 0.5 v input resistance ri 14 20 26 k *0dbm = 1mw (600 ) = 774.6mvrms package dimensions unit : mm (typ) 3107b sanyo : sip13h (11.8) (10.0) 0.5 (0.8) 2.0 25.6 ( 2.0) 3.4 c0.7 15.4max 1.0 min 3.0 min 11.2 (13.9) 4.5 1 13 0.4 1.2 1.15 2.4 ambient temperature, ta - c pd max - ta allowable power dissipation, pd max - w 0 2 4 6 8 10 12 14 16 18 -20 0 20 40 15 11.7 5.8 60 80 100 120 140 160 infinite heat sink jc = 3 c/w no fin 100 100 1.5mm 3 50 50 1.5mm 3
LA42351 no.a1036-3/8 block diagram sample application circuit 3 pre gnd thermal protection circuit ri= 20k output amplifier input amplifier 4 6 in volume 8 9 out nf 7 standby 5 v cc 10 power gnd 1 ripple filter block ripple filter ripple filter out v cc pwr gnd stb n.c. in pre gnd 1 2 3 4 5 6 7 8 9 11 12 13 c1 1.0 f /10v LA42351 nf 10 c3 1000 f /25v c5 47 f /16v c6 0.1 f r1 2.2 c4 470 f /16v rl +5v vol c2 47 f /25v n.c. n.c. n.c. cpu r3 10k
LA42351 no.a1036-4/8 pin description pin voltage pin no symbol at v cc = 18v description equivalent circuit 1 rf 17.6 ? ripple filter reference 4 in 4.4 ? input pin 3 pre_gnd 0 ? pre gnd pin 5 stb 0 to 10v (input voltage) ? standby pin ? the standby function is on when this pin at ground level 6 vol 0 to 5v (input voltage) ? control volume 7 v cc 18 ? power supply continued on next page. 200 200 1 10k 5.1k 30k v cc gnd 200 20k 4 v cc gnd 4.4v 15k 30k 5.1k 5.1k 5 v cc gnd 200 51k gnd 6
LA42351 no.a1036-5/8 continued from preceding page. pin voltage pin no symbol at v cc = 18v description equivalent circuit 8 out 8.9 ? output pin 9 nf 8.8 ? negative feedback pin at power amplifier ? connect nf capacitor 10 pwr_gnd 0 ? power gnd pin description of external parts c1 : input capacitors. a value of 1.0 f is recommended for capacitors. no te that the low-frequency area characteristics can be ad justed by changing f l . c2 : ripple filter capacitor. a value of 47 f is recommended for capacitors. decreasing the capacitance value excessively or removing this capacitor causes ripple to occur. however, increasing the capacitance value does not always cause ripple to reduced. decreasing the capacitance value makes the starting time earlier. c3 : power capacitor. c4 : output capacitors. a value of 470 f is recommended for capacitors. c5 : feedback capacitor. a value of 47 f is recommended for capacitors. decreasing the capacitance value lowers the low frequency response. increasing the capacitance value makes the starting time later. c6 : oscillation blocking capacitor. use a polyester film capacitor that is good in high frequency response and temperature characteristic. r1 : resistor connected in series with oscillation blocking capacitor. prevents phase shift attributable to the oscillation blocking capacitor so that oscillation is hard to occur. r3 : standby switch current limiting resistor. a value of 10k is recommended for resistance (when the applied voltage for the standby switch is 3v to 10v). this resistor cannot be removed. 5.1k 8 v cc gnd 10k 9 270 v cc gnd 10k
LA42351 no.a1036-6/8 features of ic inside and usage note standby function ? pin 5 is the standby switch pin. the amplifier is turned on by applying approximately 3v or more to this pin through an external resistor (r3). i stb = v be =about 0.7v ? if voltage in excess of 10v is to be applied to the standby switch, calculate the value of r3 using the following formula so that the current flowing into pin 5 is 500 a or less: r3 = -15k protector ? in order to prevent damage or degradation which may be caused by abnormally heated ic, the LA42351 has a thermal shutdown protector. accordingly, if the ic junction temperature (tj) climbs to around 160 c due to inadequate heat dissipation, the thermal shutdown protector will operate to control the output gradually into attenuation. (5-2v be ) 15k (applied voltage-2v be ) 500 a 15k 30k 5.1k r3 standby applied voltage 1.4v (2v be ) i stb =500 a or less 5
LA42351 no.a1036-7/8 po - v cc 0 1 2 3 4 5 6 7 8 9 10 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 v cc [v] po [w] thd - po 0.01 0.1 1 10 100 0.1 1 10 po [w] thd [%] 100hz 1khz 10khz thd - f 0.01 0.1 1 10 100 10 100 1000 10000 100000 f [hz] thd [%] response - f -16 -14 -12 -10 -8 -6 -4 -2 0 2 10 100 1000 10000 100000 f [hz] response [db] vno - vol 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 0123456 vol [v] vno [mvrms] vno - rg 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 100 1000 10000 100000 rg [ ] vno [mvrms] vol = 0v vol = 5v svrr - fr -55 -50 -45 -40 -35 -30 -25 10 100 1000 10000 100000 fr [hz] svrr [db] att - vol -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 0123456 vol [v] att [dbm] f=1khz r l =8 rg=600 thd=10% vol=5v v cc =18v r l =8 rg=600 vol=5v v cc =18v f=1khz r l =8 rg=600 v o =0db(vol=5v) din audio v cc =18v r l =8 rg=0 din audio v cc =18v r l =8 din audio v cc =18v r l =8 rg=600 po=1w vol=5v v cc =18v r l =8 rg=600 v o =0db(f=1khz) vol=5v v cc =18v r l =8 , rg=0 vc cr=0dbm cvcc=0.1 f vol=5v
LA42351 no.a1036-8/8 ps this catalog provides information as of march, 2008. specifications and information herein are subject to change without notice. sanyo semiconductor co.,ltd. assumes no responsibil ity for equipment failures that result from using products at values that exceed, even momentarily, rated v alues (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all sanyo semiconductor co.,ltd. products described or contained herein. sanyo semiconductor co.,ltd. strives to supply high-qua lity high-reliability products, however, any and all semiconductor products fail or malfunction with some probab ility. it is possible that these probabilistic failures or malfunction could give rise to accident s or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause damage to other property. when designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of sanyo semiconductor co.,ltd. or any third party. sanyo semiconductor co.,ltd. shall not be liable for any claim or suits with regard to a third party's intellectual property rights which has resulted from the us e of the technical information and products mentioned above. information (including circuit diagrams and circuit par ameters) herein is for example only; it is not guaranteed for volume production. any and all information described or contained he rein are subject to change without notice due to product/technology improvement, etc. when designing equip ment, refer to the "delivery specification" for the sanyo semiconductor co.,ltd. product that you intend to use. in the event that any or all sanyo semiconductor co.,ltd. products described or contained herein are controlled under any of applicable local export control l aws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written consent of sanyo semiconductor co.,ltd. icco - v cc 0 10 20 30 40 50 0 2 4 6 8 101214161820222426 v cc [v] po [w] pd - po 0 0.5 1 1.5 2 2.5 3 0.01 0.1 1 10 po [w] pd [w] r l =open rg=0 vol=0v
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